21526145302 has 4 divisors (see below), whose sum is σ = 32289217956. Its totient is φ = 10763072650.

The previous prime is 21526145269. The next prime is 21526145321. The reversal of 21526145302 is 20354162512.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5381536324 + ... + 5381536327.

It is an arithmetic number, because the mean of its divisors is an integer number (8072304489).

Almost surely, 2^21526145302 is an apocalyptic number.

21526145302 is a deficient number, since it is larger than the sum of its proper divisors (10763072654).

21526145302 is a wasteful number, since it uses less digits than its factorization.

21526145302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10763072653.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 21526145302 in words is "twenty-one billion, five hundred twenty-six million, one hundred forty-five thousand, three hundred two".